Annotation of loncom/auth/lonroles.pm, revision 1.113

1.1       harris41    1: # The LearningOnline Network with CAPA
                      2: # User Roles Screen
1.31      www         3: #
1.113   ! raeburn     4: # $Id: lonroles.pm,v 1.112 2004/11/23 07:29:24 raeburn Exp $
1.31      www         5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.32      harris41   28: ###
1.22      harris41   29: 
1.1       harris41   30: package Apache::lonroles;
                     31: 
                     32: use strict;
                     33: use Apache::lonnet();
1.7       www        34: use Apache::lonuserstate();
1.1       harris41   35: use Apache::Constants qw(:common);
1.2       www        36: use Apache::File();
1.26      www        37: use Apache::lonmenu;
1.29      albertel   38: use Apache::loncommon;
1.104     raeburn    39: use Apache::lonhtmlcommon;
1.57      www        40: use Apache::lonannounce;
1.72      www        41: use Apache::lonlocal;
1.1       harris41   42: 
1.62      matthew    43: sub redirect_user {
1.95      albertel   44:     my ($r,$title,$url,$msg,$launch_nav) = @_;
1.62      matthew    45:     $msg = $title if (! defined($msg));
1.73      www        46:     &Apache::loncommon::content_type($r,'text/html');
1.62      matthew    47:     &Apache::loncommon::no_cache($r);
                     48:     $r->send_http_header;
                     49:     my $swinfo=&Apache::lonmenu::rawconfig();
1.96      albertel   50:     my $navwindow;
1.95      albertel   51:     if ($launch_nav eq 'on') {
1.96      albertel   52: 	$navwindow.=&Apache::lonnavmaps::launch_win('now');
                     53:     } else {
                     54: 	$navwindow.=&Apache::lonnavmaps::close();
1.95      albertel   55:     }
1.62      matthew    56:     my $bodytag=&Apache::loncommon::bodytag('Switching Role');
1.92      www        57: # Note to style police: 
                     58: # This must only replace the spaces, nothing else, or it bombs elsewhere.
                     59:     $url=~s/ /\%20/g;
1.93      albertel   60:     $r->print(<<ENDREDIR);
1.62      matthew    61: <head><title>$title</title>
                     62: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
                     63: </head>
                     64: <html>
                     65: $bodytag
1.96      albertel   66: <script type="text/javascript">
1.62      matthew    67: $swinfo
                     68: </script>
1.96      albertel   69: $navwindow
1.62      matthew    70: <h1>$msg</h1>
1.95      albertel   71: <a href="$url">Continue</a>
1.62      matthew    72: </body>
                     73: </html>
                     74: ENDREDIR
                     75:     return;
                     76: }
                     77: 
1.1       harris41   78: sub handler {
1.10      www        79: 
1.1       harris41   80:     my $r = shift;
                     81: 
1.6       www        82:     my $now=time;
                     83:     my $then=$ENV{'user.login.time'};
                     84:     my $envkey;
1.107     raeburn    85:     my %dcroles = ();
                     86:     my $numdc = &check_fordc(\%dcroles,$then);
1.10      www        87: 
1.6       www        88: # ================================================================== Roles Init
                     89:     if ($ENV{'form.selectrole'}) {
1.33      www        90: 	if ($ENV{'request.course.id'}) {
                     91: 	    my %temp=('logout_'.$ENV{'request.course.id'} => time);
                     92: 	    &Apache::lonnet::put('email_status',\%temp);
1.100     albertel   93: 	    &Apache::lonnet::delenv('user.state.'.$ENV{'request.course.id'});
                     94: 	}
1.55      albertel   95: 	&Apache::lonnet::appenv("request.course.id"   => '',
                     96: 				"request.course.fn"   => '',
                     97: 				"request.course.uri"  => '',
                     98: 				"request.course.sec"  => '',
                     99: 				"request.role"        => 'cm',
1.56      www       100:                                 "request.role.adv"    => $ENV{'user.adv'},
1.55      albertel  101: 				"request.role.domain" => $ENV{'user.domain'});
1.106     raeburn   102: 
1.110     raeburn   103: # Check if user is a DC trying to enter a course and needs privs to be created
1.107     raeburn   104:         if ($numdc > 0) {
                    105:             foreach my $envkey (keys %ENV) {
                    106:                 if ($envkey =~ m-^form\.cc\./(\w+)/(\w+)$-) {
                    107:                     if ($dcroles{$1}) {
1.109     raeburn   108:                         my $cckey = 'user.role.cc./'.$1.'/'.$2;
1.110     raeburn   109:                         &check_privs($cckey,$then,$now);
1.107     raeburn   110:                     }
                    111:                     last;
                    112:                 }
                    113:             }
                    114:         }
                    115: 
1.13      www       116:         foreach $envkey (keys %ENV) {
1.40      matthew   117:             next if ($envkey!~/^user\.role\./);
1.102     raeburn   118:             my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
                    119:             &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1.6       www       120:             if ($ENV{'form.'.$trolecode}) {
1.55      albertel  121: 		if ($tstatus eq 'is') {
                    122: 		    $where=~s/^\///;
                    123: 		    my ($cdom,$cnum,$csec)=split(/\//,$where);
1.111     albertel  124: # store role if recent_role list being kept
                    125:                     if ($ENV{'environment.recentroles'}) {
                    126: 			&Apache::lonhtmlcommon::store_recent('roles',
                    127: 							     $trolecode,' ');
                    128:                     }
                    129: 
                    130: 
1.53      www       131: # check for keyed access
1.55      albertel  132: 		    if (($role eq 'st') && 
                    133:                        ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
1.89      www       134: # who is key authority?
                    135: 			my $authdom=$cdom;
                    136: 			my $authnum=$cnum;
                    137: 			if ($ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
                    138: 			    ($authnum,$authdom)=
                    139: 				split(/\W/,$ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'});
                    140: 			}
                    141: # check with key authority
                    142: 			unless (&Apache::lonnet::validate_access_key(
1.55      albertel  143: 				     $ENV{'environment.key.'.$cdom.'_'.$cnum},
1.89      www       144: 					     $authdom,$authnum)) {
1.53      www       145: # there is no valid key
1.55      albertel  146: 			     if ($ENV{'form.newkey'}) {
1.53      www       147: # student attempts to register a new key
1.89      www       148: 				 &Apache::loncommon::content_type($r,'text/html');
                    149: 				 &Apache::loncommon::no_cache($r);
                    150: 				 $r->send_http_header;
                    151: 				 my $swinfo=&Apache::lonmenu::rawconfig();
                    152: 				 my $bodytag=&Apache::loncommon::bodytag
                    153: 				    ('Verifying Access Key to Unlock this Course');
1.90      www       154: 				 my $buttontext=&mt('Enter Course');
                    155: 				 my $message=&mt('Successfully registered key');
                    156: 				 my $assignresult=
                    157: 				     &Apache::lonnet::assign_access_key(
                    158: 						     $ENV{'form.newkey'},
                    159: 						     $authdom,$authnum,
1.91      www       160: 						     $cdom,$cnum,
1.90      www       161:                                                      $ENV{'user.domain'},
                    162: 						     $ENV{'user.name'},
                    163: 	      'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
                    164:                                                      $trolecode);
                    165: 				 unless ($assignresult eq 'ok') {
                    166: 				     $assignresult=~s/^error\:\s*//;
                    167: 				     $message=&mt($assignresult).
                    168: 				     '<br /><a href="/adm/logout">'.
1.89      www       169: 				     &mt('Logout').'</a>';
1.90      www       170: 				     $buttontext=&mt('Re-Enter Key');
                    171: 				 }
1.89      www       172: 				 $r->print(<<ENDENTEREDKEY);
                    173: <head><title>Verifying Course Access Key</title>
                    174: </head>
                    175: <html>
                    176: $bodytag
                    177: <script>
                    178: $swinfo
                    179: </script>
                    180: <form method="post">
                    181: <input type="hidden" name="selectrole" value="1" />
                    182: <input type="hidden" name="$trolecode" value="1" />
1.90      www       183: <font size="+2">$message</font><br />
1.89      www       184: <input type="submit" value="$buttontext" />
                    185: </form>
                    186: </body></html>
                    187: ENDENTEREDKEY
                    188:                                  return OK;
1.55      albertel  189: 			     } else {
1.53      www       190: # print form to enter a new key
1.73      www       191: 				 &Apache::loncommon::content_type($r,'text/html');
1.55      albertel  192: 				 &Apache::loncommon::no_cache($r);
                    193: 				 $r->send_http_header;
                    194: 				 my $swinfo=&Apache::lonmenu::rawconfig();
                    195: 				 my $bodytag=&Apache::loncommon::bodytag
                    196: 				    ('Enter Access Key to Unlock this Course');
                    197: 				 $r->print(<<ENDENTERKEY);
1.53      www       198: <head><title>Entering Course Access Key</title>
                    199: </head>
                    200: <html>
                    201: $bodytag
                    202: <script>
                    203: $swinfo
                    204: </script>
                    205: <form method="post">
1.89      www       206: <input type="hidden" name="selectrole" value="1" />
                    207: <input type="hidden" name="$trolecode" value="1" />
1.53      www       208: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
                    209: <input type="submit" value="Enter key" />
                    210: </form>
                    211: </body></html>
                    212: ENDENTERKEY
1.55      albertel  213: 				 return OK;
                    214: 			     }
                    215: 			 }
                    216: 		     }
1.87      www       217: 		    &Apache::lonnet::log($ENV{'user.domain'},
                    218: 					 $ENV{'user.name'},
                    219: 					 $ENV{'user.home'},
                    220: 					 "Role ".$trolecode);
1.101     albertel  221: 		    
1.56      www       222: 		    &Apache::lonnet::appenv(
1.101     albertel  223: 					   'request.role'        => $trolecode,
1.56      www       224: 					   'request.role.domain' => $cdom,
                    225: 					   'request.course.sec'  => $csec);
1.101     albertel  226:                     my $tadv=0;
                    227: 		    if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
                    228: 		    &Apache::lonnet::appenv('request.role.adv'    => $tadv);
                    229: 
1.72      www       230: 		    my $msg=&mt('Entering course ...');
1.62      matthew   231: 
1.55      albertel  232: 		    if (($cnum) && ($role ne 'ca')) {
                    233: 			my ($furl,$ferr)=
                    234: 			    &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
                    235: 			if (($ENV{'form.orgurl'}) && 
                    236: 			    ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
1.67      albertel  237: 			    my $dest=$ENV{'form.orgurl'};
1.71      albertel  238: 			    if ( &Apache::lonnet::mod_perl_version() == 2 ) {
1.67      albertel  239: 				&Apache::lonnet::cleanenv();
1.69      albertel  240: 			    }
1.67      albertel  241: 			    $r->internal_redirect($dest);
1.55      albertel  242: 			    return OK;
                    243: 			} else {
                    244: 			    unless ($ENV{'request.course.id'}) {
                    245: 				&Apache::lonnet::appenv(
                    246: 				      "request.course.id"  => $cdom.'_'.$cnum);
1.61      www       247: 				$furl='/adm/roles?tryagain=1';
1.55      albertel  248: 				$msg=
1.72      www       249: 				    '<h1><font color=red>'.
                    250: 			 &mt('Could not initialize course at this time.').
                    251: 		    '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55      albertel  252: 			    }
1.58      bowersj2  253: 
                    254: 			    # Check to see if the user is a CC entering a course 
                    255: 			    # for the first time
                    256: 			    my (undef, undef, $role, $courseid) = split(/\./, $envkey);
                    257: 			    if (substr($courseid, 0, 1) eq '/') {
                    258: 				$courseid = substr($courseid, 1);
                    259: 			    }
                    260: 			    $courseid =~ s/\//_/;
                    261: 			    if ($role eq 'cc' && $ENV{'course.' . $courseid . 
                    262: 							  '.course.helper.not.run'}) {
                    263: 				$furl = "/adm/helper/course.initialization.helper";
                    264: 			    }
1.62      matthew   265:                             # Send the user to the course they selected
1.78      sakharuk  266:                             &redirect_user($r,&mt('Entering Course'),
1.95      albertel  267:                                            $furl,$msg,
                    268: 					   $ENV{'environment.remotenavmap'});
1.20      www       269:                             return OK;
1.55      albertel  270: 			}
                    271: 		    }
1.62      matthew   272:                     #
                    273:                     # Send the user to the construction space they selected
                    274:                     if ($role =~ /^(au|ca)$/) {
                    275:                         my $redirect_url = '/priv/';
                    276:                         if ($role eq 'au') {
                    277:                             $redirect_url.=$ENV{'user.name'};
                    278:                         } else {
                    279:                             $where =~ /\/(.*)$/;
                    280:                             $redirect_url .= $1;
                    281:                         }
                    282:                         $redirect_url .= '/';
1.78      sakharuk  283:                         &redirect_user($r,&mt('Entering Construction Space'),
1.62      matthew   284:                                        $redirect_url);
                    285:                         return OK;
                    286:                     }
1.104     raeburn   287:                     if ($role eq 'dc') {
1.108     raeburn   288:                         my $redirect_url = '/adm/menu/';
                    289:                         &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
1.104     raeburn   290:                                        $redirect_url);
1.108     raeburn   291:                         return OK;
1.104     raeburn   292:                     }
1.55      albertel  293: 		}
                    294:             }
1.6       www       295:         }
1.40      matthew   296:     }
1.44      www       297: 
1.10      www       298: 
1.6       www       299: # =============================================================== No Roles Init
1.10      www       300: 
1.73      www       301:     &Apache::loncommon::content_type($r,'text/html');
1.30      albertel  302:     &Apache::loncommon::no_cache($r);
1.10      www       303:     $r->send_http_header;
                    304:     return OK if $r->header_only;
                    305: 
1.52      www       306:     my $swinfo=&Apache::lonmenu::rawconfig();
1.41      www       307:     my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.94      albertel  308:     my $helptag='<table><tr><td>'.&Apache::loncommon::help_open_menu('','General Intro','General_Intro','User Roles',1,undef,undef,undef,undef,,&mt("Click here for help")).'</td></td></tr></table>';
1.10      www       309:     $r->print(<<ENDHEADER);
                    310: <html>
                    311: <head>
                    312: <title>LON-CAPA User Roles</title>
1.41      www       313: </head>
                    314: $bodytag
1.45      www       315: $helptag<br />
1.26      www       316: <script>
                    317: $swinfo
                    318: window.focus();
                    319: </script>
1.10      www       320: ENDHEADER
1.6       www       321: 
1.2       www       322: # ------------------------------------------ Get Error Message from Environment
                    323: 
                    324:     my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
1.12      www       325:     if ($ENV{'user.error.msg'}) {
1.55      albertel  326: 	$r->log_reason(
                    327:    "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
1.12      www       328:     }
1.1       harris41  329: 
1.61      www       330: # ------------------------------------------------- Can this user re-init, etc?
1.6       www       331: 
1.61      www       332:     my $advanced=$ENV{'user.adv'};
                    333:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
                    334:     my $tryagain=$ENV{'form.tryagain'};
1.6       www       335: 
1.2       www       336: # -------------------------------------------------------- Generate Page Output
1.6       www       337: # --------------------------------------------------------------- Error Header?
1.2       www       338:     if ($error) {
                    339: 	$r->print("<h1>LON-CAPA Access Control</h1>");
1.4       www       340:         $r->print("<hr><pre>Access  : ".
                    341:                   Apache::lonnet::plaintext($priv)."\n");
                    342:         $r->print("Resource: $fn\n");
                    343:         $r->print("Action  : $msg\n</pre><hr>");
1.2       www       344:     } else {
1.25      www       345:         if ($ENV{'user.error.msg'}) {
                    346: 	    $r->print(
1.72      www       347:  '<h3><font color=red>'.
                    348:  &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
1.25      www       349: 	}
1.2       www       350:     }
1.6       www       351: # -------------------------------------------------------- Choice or no choice?
1.2       www       352:     if ($nochoose) {
1.6       www       353:         if ($advanced) {
1.72      www       354: 	    $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
1.6       www       355:         } else {
1.72      www       356: 	    $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
                    357: 		      &mt('This resource might be part of'));
1.55      albertel  358: 	    if ($ENV{'request.course.id'}) {
1.72      www       359: 		$r->print(&mt(' another'));
1.55      albertel  360: 	    } else {
1.72      www       361: 		$r->print(&mt(' a certain'));
1.55      albertel  362: 	    } 
1.72      www       363: 	    $r->print(&mt(' course.').'</body></html>');
1.55      albertel  364: 	    return OK;
1.6       www       365:         } 
                    366:     } else {
                    367:         if ($advanced) {
1.72      www       368: 	    $r->print(&mt("Your home server is ").
1.55      albertel  369: 		      $Apache::lonnet::hostname{&Apache::lonnet::homeserver
                    370:                       ($ENV{'user.name'},$ENV{'user.domain'})}.
                    371: 		      "<br />\n");
1.72      www       372: 	    $r->print(&mt(
                    373:       "Author and Co-Author roles may not be available on servers other than your home server."));
1.17      www       374:         }
1.18      www       375:         if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
                    376:     	    $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6       www       377:         }
1.84      www       378:         $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.6       www       379:         $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
                    380:         $r->print('<input type=hidden name=selectrole value=1>');
                    381:     }
1.63      www       382:     if ($ENV{'user.adv'}) {
                    383: 	$r->print(
1.72      www       384: 	      '<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.63      www       385: 	if ($ENV{'form.showall'}) { $r->print(' checked'); }
1.72      www       386: 	$r->print('><input type=submit value="'.&mt('Display').'">');
1.63      www       387:     }
1.4       www       388: 
1.75      albertel  389:     my (%roletext,%sortrole,%roleclass);
1.84      www       390:     my $countactive=0;
                    391:     my $inrole=0;
                    392:     my $possiblerole='';
1.3       albertel  393:     foreach $envkey (sort keys %ENV) {
1.35      matthew   394:         my $button = 1;
1.49      www       395:         my $switchserver='';
1.75      albertel  396: 	my $roletext;
                    397: 	my $sortkey;
1.2       www       398:         if ($envkey=~/^user\.role\./) {
1.102     raeburn   399:             my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
                    400:             &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1.46      matthew   401:             next if (!defined($role) || $role eq '');
1.102     raeburn   402:             $tremark='';
                    403:             $tpstart='&nbsp;';
                    404:             $tpend='&nbsp;';
                    405:             $tfont='#000000';
1.4       www       406:             if ($tstart) {
1.74      www       407:                 $tpstart=&Apache::lonlocal::locallocaltime($tstart);
1.4       www       408:             }
                    409:             if ($tend) {
1.74      www       410:                 $tpend=&Apache::lonlocal::locallocaltime($tend);
1.4       www       411:             }
1.6       www       412:             if ($ENV{'request.role'} eq $trolecode) {
                    413: 		$tstatus='selected';
                    414:             }
1.4       www       415:             my $tbg;
1.35      matthew   416:             if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
                    417:                 ($ENV{'form.showall'})) {
                    418:                 if ($tstatus eq 'is') {
                    419:                     $tbg='#77FF77';
1.47      www       420:                     $tfont='#003300';
1.84      www       421: 		    $possiblerole=$trolecode;
                    422: 		    $countactive++;
1.35      matthew   423:                 } elsif ($tstatus eq 'future') {
                    424:                     $tbg='#FFFF77';
1.49      www       425:                     $button=0;
1.35      matthew   426:                 } elsif ($tstatus eq 'will') {
                    427:                     $tbg='#FFAA77';
1.72      www       428:                     $tremark.=&mt('Active at next login. ');
1.35      matthew   429:                 } elsif ($tstatus eq 'expired') {
                    430:                     $tbg='#FF7777';
1.47      www       431:                     $tfont='#330000';
1.49      www       432:                     $button=0;
1.35      matthew   433:                 } elsif ($tstatus eq 'will_not') {
                    434:                     $tbg='#AAFF77';
1.72      www       435:                     $tremark.=&mt('Expired after logout. ');
1.35      matthew   436:                 } elsif ($tstatus eq 'selected') {
                    437:                     $tbg='#11CC55';
1.47      www       438:                     $tfont='#002200';
1.84      www       439: 		    $inrole=1;
1.86      albertel  440: 		    $countactive++;
1.72      www       441:                     $tremark.=&mt('Currently selected. ');
1.35      matthew   442:                 }
                    443:                 my $trole;
                    444:                 if ($role =~ /^cr\//) {
                    445:                     my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.72      www       446:                     $tremark.='<br>'.&mt('Defined by ').$rauthor.
                    447: 			&mt(' at ').$rdomain.'.';
1.35      matthew   448:                     $trole=$rrole;
1.8       www       449:                 } else {
1.35      matthew   450:                     $trole=Apache::lonnet::plaintext($role);
                    451:                 }
                    452:                 my $ttype;
                    453:                 my $twhere;
                    454:                 my ($tdom,$trest,$tsection)=
                    455:                     split(/\//,Apache::lonnet::declutter($where));
                    456:                 # First, Co-Authorship roles
                    457:                 if ($role eq 'ca') {
1.39      stredwic  458:                     my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.83      albertel  459: 		    my $allowed=0;
                    460: 		    my @ids=&Apache::lonnet::current_machine_ids();
                    461: 		    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
                    462:                     if (!$allowed) {
1.49      www       463: 			$button=0;
1.51      www       464:                         $switchserver=&Apache::lonnet::escape('http://'.
                    465:                          $Apache::lonnet::hostname{$home}.
                    466:                          '/adm/login?domain='.$ENV{'user.domain'}.
                    467: 			  '&username='.$ENV{'user.name'}.
1.97      albertel  468:                           '&firsturl=/priv/'.$trest.'/');
1.49      www       469:                     }
1.35      matthew   470:                     #next if ($home eq 'no_host');
                    471:                     $home = $Apache::lonnet::hostname{$home};
1.78      sakharuk  472:                     $ttype='Construction Space';
1.72      www       473:                     $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
                    474: 			': '.$tdom.'<br />'.
                    475:                         ' '.&mt('Server').':&nbsp;'.$home;
1.35      matthew   476:                     $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82      www       477: 		    $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75      albertel  478: 		    $sortkey=$role."$trest:$tdom";
1.35      matthew   479:                 } elsif ($role eq 'au') {
                    480:                     # Authors
                    481:                     my $home = &Apache::lonnet::homeserver
1.39      stredwic  482:                         ($ENV{'user.name'},$ENV{'user.domain'});
1.83      albertel  483: 		    my $allowed=0;
                    484: 		    my @ids=&Apache::lonnet::current_machine_ids();
                    485: 		    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
                    486:                     if (!$allowed) {
1.49      www       487: 			$button=0;
1.51      www       488:                         $switchserver=&Apache::lonnet::escape('http://'.
                    489:                          $Apache::lonnet::hostname{$home}.
                    490:                           '/adm/login?domain='.$ENV{'user.domain'}.
                    491: 			   '&username='.$ENV{'user.name'}.
1.97      albertel  492:                            '&firsturl=/priv/'.$ENV{'user.name'}.'/');
1.49      www       493:                     }
1.35      matthew   494:                     #next if ($home eq 'no_host');
                    495:                     $home = $Apache::lonnet::hostname{$home};
1.78      sakharuk  496:                     $ttype='Construction Space';
1.72      www       497:                     $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
                    498: 			':&nbsp;'.$home;
1.35      matthew   499:                     $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82      www       500: 		    $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$ENV{'user.name'}.'/');
1.75      albertel  501: 		    $sortkey=$role;
1.35      matthew   502:                 } elsif ($trest) {
1.78      sakharuk  503:                     $ttype='Course';
1.35      matthew   504:                     if ($tsection) {
1.72      www       505:                         $ttype.='<br>'.&mt('Section/Group').': '.$tsection;
1.37      albertel  506: 		    }
1.35      matthew   507:                     my $tcourseid=$tdom.'_'.$trest;
                    508:                     if ($ENV{'course.'.$tcourseid.'.description'}) {
1.47      www       509:                         $twhere=$ENV{'course.'.$tcourseid.'.description'};
1.80      albertel  510: 			$sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72      www       511:                         unless ($twhere eq &mt('Currently not available')) {
1.55      albertel  512: 			    $twhere.=' <font size="-2">'.
1.72      www       513:         &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49      www       514:                                     '</font>';
1.55      albertel  515: 			}
1.8       www       516:                     } else {
1.105     raeburn   517:                         my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1.35      matthew   518:                         if (%newhash) {
1.80      albertel  519: 			    $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77      albertel  520: 				"\0".$envkey;
1.49      www       521:                             $twhere=$newhash{'description'}.
                    522:                               ' <font size="-2">'.
1.72      www       523:         &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49      www       524:                               '</font>';
1.35      matthew   525:                         } else {
1.72      www       526:                             $twhere=&mt('Currently not available');
1.35      matthew   527:                             $ENV{'course.'.$tcourseid.'.description'}=$twhere;
1.80      albertel  528: 			    $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.35      matthew   529:                         }
1.8       www       530:                     }
1.72      www       531: 		    if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35      matthew   532:                 } elsif ($tdom) {
1.78      sakharuk  533:                     $ttype='Domain';
1.35      matthew   534:                     $twhere=$tdom;
1.75      albertel  535: 		    $sortkey=$role.$twhere;
1.35      matthew   536:                 } else {
1.78      sakharuk  537:                     $ttype='System';
1.72      www       538:                     $twhere=&mt('system wide');
1.75      albertel  539: 		    $sortkey=$role.$twhere;
1.13      www       540:                 }
1.35      matthew   541:  
1.110     raeburn   542:                 $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver);
1.75      albertel  543: 		$roletext{$envkey}=$roletext;
                    544: 		if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
                    545: 		$sortrole{$sortkey}=$envkey;
                    546: 		$roleclass{$envkey}=$ttype;
1.55      albertel  547: 	    }
1.4       www       548:         }
1.75      albertel  549:     }
1.84      www       550: # No active roles
                    551:     if ($countactive==0) {
                    552: 	if ($inrole) {
                    553: 	    $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
                    554: 	} else {
                    555: 	    $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
                    556: 	}
                    557: 	$r->print('</form></body></html>');
                    558: 	return OK;
                    559: # Is there only one choice?
1.88      www       560:     } elsif (($countactive==1) && ($ENV{'request.role'} eq 'cm')) {
1.84      www       561: 	$r->print('<h3>'.&mt('Please stand by.').'</h3>'.
                    562: 	    '<input type="hidden" name="'.$possiblerole.'" value="1" />');
                    563: 	$r->print("</form>\n");
                    564: 	$r->rflush();
                    565: 	$r->print('<script>document.forms.rolechoice.submit();</script>');
                    566: 	$r->print('</body></html>');
                    567: 	return OK;
                    568:     }
                    569: # More than one possible role
                    570: # ----------------------------------------------------------------------- Table
                    571:     unless (($advanced) || ($nochoose)) {
                    572: 	$r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
                    573:     }
                    574:     $r->print('<br /><table><tr>');
                    575:     unless ($nochoose) { $r->print('<th>&nbsp;</th>'); }
                    576:     $r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
                    577:          '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
1.99      www       578: 	      &mt('Remarks and Calendar Announcements').'</th></tr>'."\n");
1.76      albertel  579:     my $doheaders=-1;
1.78      sakharuk  580:     foreach my $type ('Construction Space','Course','Domain','System') {
1.76      albertel  581: 	my $haverole=0;
1.75      albertel  582: 	foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
                    583: 	    if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { 
1.76      albertel  584: 		$haverole=1;
1.75      albertel  585: 	    }
1.76      albertel  586: 	}
                    587: 	if ($haverole) { $doheaders++; }
                    588:     }
1.111     albertel  589: 
                    590:     if ($ENV{'environment.recentroles'}) {
                    591:         my %recent_roles =
                    592:                &Apache::lonhtmlcommon::get_recent('roles',$ENV{'environment.recentrolesn'});
                    593: 	my $output='';
                    594: 	foreach (sort(keys(%recent_roles))) {
                    595: 	    if (defined($roletext{'user.role.'.$_})) {
                    596: 		$output.=$roletext{'user.role.'.$_};
1.113   ! raeburn   597: 	    } elsif ($numdc > 0) {
        !           598:                 unless ($_ =~/^error\:/) {
        !           599:                     $output.=&display_cc_role('user.role.'.$_);
        !           600:                 }
        !           601:             } 
1.111     albertel  602: 	}
                    603: 	if ($output) {
                    604: 	    $r->print("<tr bgcolor='#BBffBB'><td align='center' colspan='7'>".
                    605: 		      &mt('Recent Roles')."</td>");
                    606: 	    $r->print($output);
                    607: 	    $r->print("</tr>");
                    608: 	}
                    609:     }
                    610: 
1.104     raeburn   611:     if ($numdc > 0) {
1.112     raeburn   612:         $r->print(&coursepick_jscript());
                    613:         $r->print(&Apache::loncommon::coursebrowser_javascript());
1.108     raeburn   614:     }
                    615:     foreach my $type ('Construction Space','Course','Domain','System') {
                    616: 	my $output;
                    617: 	foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
                    618: 	    if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { 
                    619: 		$output.=$roletext{$sortrole{$which}};
                    620:                 if ($sortrole{$which} =~ m-dc\./(\w+)/-) {
                    621:                     if ($dcroles{$1}) {
                    622:                         $output .= &allcourses_row($1);
1.104     raeburn   623:                     }
                    624:                 }
1.76      albertel  625: 	    }
1.108     raeburn   626: 	}
                    627: 	if ($output) {
                    628: 	    if ($doheaders > 0) {
                    629: 		$r->print("<tr bgcolor='#BBffBB'>".
1.112     raeburn   630: 			  "<td align='center' colspan='7'>".&mt($type)."</td></tr>");
1.76      albertel  631: 	    }
1.108     raeburn   632: 	    $r->print($output);	
                    633: 	}
1.4       www       634:     }
1.14      www       635:     my $tremark='';
1.47      www       636:     my $tfont='#003300';
1.14      www       637:     if ($ENV{'request.role'} eq 'cm') {
1.19      www       638: 	$r->print('<tr bgcolor="#11CC55">');
1.72      www       639:         $tremark=&mt('Currently selected. ');
1.47      www       640:         $tfont='#002200';
1.14      www       641:     } else {
                    642:         $r->print('<tr bgcolor="#77FF77">');
                    643:     }
                    644:     unless ($nochoose) {
1.55      albertel  645: 	if ($ENV{'request.role'} ne 'cm') {
1.72      www       646: 	    $r->print('<td><input type=submit value="'.
                    647: 		      &mt('Select').'" name="cm"></td>');
1.55      albertel  648: 	} else {
                    649: 	    $r->print('<td>&nbsp;</td>');
                    650: 	}
1.14      www       651:     }
1.72      www       652:     $r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
1.47      www       653:       '</font></td><td><font color="'.$tfont.'">'.$tremark.
                    654:       '&nbsp;</font></td></tr>'."\n");
1.4       www       655: 
                    656:     $r->print('</table>');
                    657:     unless ($nochoose) {
                    658: 	$r->print("</form>\n");
                    659:     }
1.22      harris41  660: # ------------------------------------------------------------ Privileges Info
1.55      albertel  661:     if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
                    662: 	$r->print('<hr><h2>Current Privileges</h2>');
1.4       www       663: 
1.55      albertel  664: 	foreach $envkey (sort keys %ENV) {
                    665: 	    if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
                    666: 		my $where=$envkey;
                    667: 		$where=~s/^user\.priv\.$ENV{'request.role'}\.//;
                    668: 		my $ttype;
                    669: 		my $twhere;
                    670: 		my ($tdom,$trest,$tsec)=
                    671: 		    split(/\//,Apache::lonnet::declutter($where));
                    672: 		if ($trest) {
                    673: 		    if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
                    674: 			$ttype='Construction Space';
                    675: 			$twhere='User: '.$trest.', Domain: '.$tdom;
                    676: 		    } else {
                    677: 			$ttype='Course';
                    678: 			$twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
                    679: 			if ($tsec) {
                    680: 			    $twhere.=' (Section/Group: '.$tsec.')';
                    681: 			}
                    682: 		    }
                    683: 		} elsif ($tdom) {
                    684: 		    $ttype='Domain';
                    685: 		    $twhere=$tdom;
                    686: 		} else {
                    687: 		    $ttype='System';
                    688: 		    $twhere='/';
                    689: 		}
                    690: 		$r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
                    691: 		foreach (sort split(/:/,$ENV{$envkey})) {
                    692: 		    if ($_) {
                    693: 			my ($prv,$restr)=split(/\&/,$_);
                    694: 			my $trestr='';
                    695: 			if ($restr ne 'F') {
                    696: 			    my $i;
                    697: 			    $trestr.=' (';
                    698: 			    for ($i=0;$i<length($restr);$i++) {
                    699: 				$trestr.=
                    700: 			       Apache::lonnet::plaintext(substr($restr,$i,1));
                    701: 				if ($i<length($restr)-1) { $trestr.=', '; }
                    702: 			    }
                    703: 			    $trestr.=')';
                    704: 			}
                    705: 			$r->print('<li>'.
                    706: 				  Apache::lonnet::plaintext($prv).$trestr.
                    707: 				  '</li>');
                    708: 		    }
                    709: 		}
                    710: 		$r->print('</ul>');
                    711: 	    }
                    712: 	}
1.4       www       713:     }
1.66      www       714:     $r->print(&Apache::lonnet::getannounce());
1.65      www       715:     if ($advanced) {
                    716: 	$r->print('<p><small><i>This is LON-CAPA '.
1.85      www       717: 		  $r->dir_config('lonVersion').'</i><br />'.
                    718: 		  '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
1.65      www       719:     }
1.1       harris41  720:     $r->print("</body></html>\n");
                    721:     return OK;
1.102     raeburn   722: }
                    723: 
                    724: sub role_status {
                    725:     my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
                    726:     my @pwhere = ();
                    727:     if (exists($ENV{$rolekey}) && $ENV{$rolekey} ne '') {
                    728:         (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
                    729:         unless (!defined($$role) || $$role eq '') {
                    730:             $$where=join('.',@pwhere);
                    731:             $$trolecode=$$role.'.'.$$where;
                    732:             ($$tstart,$$tend)=split(/\./,$ENV{$rolekey});
                    733:             $$tstatus='is';
1.105     raeburn   734:             if ($$tstart && $$tstart>$then) {
                    735: 		$$tstatus='future';
                    736: 		if ($$tstart<$now) { $$tstatus='will'; }
1.102     raeburn   737:             }
                    738:             if ($$tend) {
                    739:                 if ($$tend<$then) {
                    740:                     $$tstatus='expired';
1.103     raeburn   741:                 } elsif ($$tend<$now) {
1.104     raeburn   742:                     $$tstatus='will_not';
1.102     raeburn   743:                 }
                    744:             }
                    745:         }
                    746:     }
                    747: }
1.1       harris41  748: 
1.110     raeburn   749: sub build_roletext {
                    750:     my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_;
1.112     raeburn   751:     my $roletext='<tr bgcolor="'.$tbg.'">';
1.110     raeburn   752:     unless ($nochoose) {
                    753:         if (!$button) {
                    754:             if ($switchserver) {
                    755:                 $roletext.='<td><a href="/adm/logout?handover='.
                    756:                 $switchserver.'">'.&mt('Switch Server').'</a></td>';
                    757:             } else {
                    758:                 $roletext.=('<td>&nbsp;</td>');
                    759:             }
                    760:         } elsif ($tstatus eq 'is') {
                    761:             $roletext.=('<td><input type=submit value="'.
                    762:                         &mt('Select').'" name="'.
                    763:                         $trolecode.'"></td>');
                    764:         } elsif ($tryagain) {
                    765:             $roletext.=
                    766:                 '<td><input type=submit value="'.
                    767:                 &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
                    768:         } elsif ($advanced) {
                    769:             $roletext.=
                    770:                 '<td><input type=submit value="'.
                    771:                 &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
                    772:         } else {
                    773:             $roletext.='<td>&nbsp;</td>';
                    774:         }
                    775:     }
                    776:     $tremark.=&Apache::lonannounce::showday(time,1,
                    777:                  &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
                    778: 
                    779: 
                    780:     $roletext.='<td><font color="'.$tfont.'">'.$trole.
                    781:                '</font></td><td><font color="'.$tfont.'">'.$ttype.
                    782:                '</font></td><td><font color="'.$tfont.'">'.$twhere.
                    783:                '</font></td><td><font color="'.$tfont.'">'.$tpstart.
                    784:                '</font></td><td><font color="'.$tfont.'">'.$tpend.
                    785:                '</font></td><td><font color="'.$tfont.'">'.$tremark.
                    786:                '&nbsp;</font></td></tr>'."\n";
                    787:     return $roletext;
                    788: }
                    789: 
                    790: sub check_privs {
                    791:     my ($cckey,$then,$now) = @_;
                    792:     if ($ENV{$cckey}) {
                    793:         my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
                    794:         &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
                    795:         unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
                    796:             &set_privileges($1,$2);
                    797:         }
                    798:     } else {
                    799:         &set_privileges($1,$2);
                    800:     }
                    801: }
                    802: 
1.104     raeburn   803: sub check_fordc {
                    804:     my ($dcroles,$then) = @_;
                    805:     my $numdc = 0;
                    806:     if ($ENV{'user.adv'}) {
                    807:         foreach my $envkey (sort keys %ENV) {
                    808:             if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) {
                    809:                 my $dcdom = $1;
                    810:                 my $livedc = 1;
                    811:                 my ($tstart,$tend)=split(/\./,$ENV{$envkey});
1.105     raeburn   812:                 if ($tstart && $tstart>$then) { $livedc = 0; }
                    813:                 if ($tend   && $tend  <$then) { $livedc = 0; }
1.104     raeburn   814:                 if ($livedc) {
                    815:                     $$dcroles{$dcdom} = $envkey;
1.105     raeburn   816:                     $numdc++;
1.104     raeburn   817:                 }
                    818:             }
                    819:         }
                    820:     }
                    821:     return $numdc;
                    822: }
                    823: 
1.108     raeburn   824: sub courselink {
                    825:     my ($dcdom) = @_;
1.109     raeburn   826:     my $courseform=&Apache::loncommon::selectcourse_link
1.112     raeburn   827:                      ('rolechoice','dccourse_'.$dcdom,'dcdomain_'.$dcdom,'coursedesc_'.$dcdom,$dcdom);
1.109     raeburn   828:     my $hiddenitems = '<input type="hidden" name="dcdomain_'.$dcdom.'" value="'.$dcdom.'" />'.
                    829:                       '<input type="hidden" name="origdom_'.$dcdom.'" value="'.$dcdom.'" />'.
                    830:                       '<input type="hidden" name="dccourse_'.$dcdom.'" value="" />'.
                    831:                       '<input type="hidden" name="coursedesc_'.$dcdom.'" value="" />';
1.112     raeburn   832:     return $courseform.$hiddenitems;
1.109     raeburn   833: }
                    834: 
                    835: sub coursepick_jscript {
1.104     raeburn   836:     my $verify_script = <<"END";
                    837: <script>
1.108     raeburn   838: function verifyCoursePick(caller) {
                    839:     var numbutton = getIndex(caller)
1.112     raeburn   840:     var pickedCourse = document.rolechoice.elements[numbutton+4].value
                    841:     var pickedDomain = document.rolechoice.elements[numbutton+2].value
                    842:     if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1.104     raeburn   843:         if (pickedCourse != '') {
1.108     raeburn   844:             if (numbutton != -1) {
                    845:                 var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
                    846:                 document.rolechoice.elements[numbutton+1].name = courseTarget
                    847:                 document.rolechoice.submit()
                    848:             }
1.104     raeburn   849:         }
                    850:         else {
                    851:             alert("You must use the 'Select Course' link to open a separate pick course window which you can use to select the course you wish to enter");
                    852:         }
                    853:     }
                    854:     else {
                    855:         alert("You can only use this screen to select courses in the current domain")
                    856:     }
                    857: }
1.109     raeburn   858: function getIndex(caller) {
1.108     raeburn   859:     for (var i=0;i<document.rolechoice.elements.length;i++) {
1.109     raeburn   860:         if (document.rolechoice.elements[i] == caller) {
1.108     raeburn   861:             return i;
                    862:         }
                    863:     }
                    864:     return -1;
                    865: }
1.104     raeburn   866: </script>
                    867: END
1.109     raeburn   868:     return $verify_script;
1.104     raeburn   869: }
                    870: 
1.109     raeburn   871: sub processpick {
                    872:     my $dcdom = shift;
                    873:     my $process_pick = <<"END";
                    874: <script>
                    875: function process_pick(dom) {
                    876:     var numbutton = getIndex(dom)
                    877:     var pickedCourse = opener.document.rolechoice.dccourse_$dcdom.value
                    878:     var pickedDomain = opener.document.rolechoice.dcdomain_$dcdom.value
                    879:     if (opener.document.rolechoice.dcdomain_$dcdom.value == opener.document.rolechoice.origdom_$dcdom.value) {
                    880:         if (pickedCourse != '') {
                    881:             if (numbutton != -1) {
                    882:                 var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
                    883:                 opener.document.rolechoice.elements[numbutton+1].name = courseTarget
                    884:                 opener.document.rolechoice.submit()
                    885:             }
                    886:         }
                    887:     }
                    888: }
                    889:  
                    890: function getIndex(dom) {
                    891:     var callername = 'ccpick_'+dom
                    892:     for (var i=0;i<opener.document.rolechoice.elements.length;i++) {
                    893:         var elemname = opener.document.rolechoice.elements[i].name
                    894:         if (elemname == callername) {
                    895:             return i;
                    896:         }
                    897:     }
                    898:     return -1;
                    899: }
                    900: </script>
                    901: END
                    902:     return $process_pick;
                    903: }
1.108     raeburn   904: 
1.113   ! raeburn   905: sub display_cc_role {
        !           906:     my $rolekey = shift;
        !           907:     my $roletext;
1.104     raeburn   908:     my $advanced = $ENV{'user.adv'};
                    909:     my $tryagain = $ENV{'form.tryagain'};
1.113   ! raeburn   910:     unless ($rolekey =~/^error\:/) {
        !           911:         if ($rolekey =~ m-^user\.role.cc\./(\w+)/(\w+)$-) {
        !           912:             my $tcourseid = $1.'_'.$2;
        !           913:             my $trolecode = 'cc./'.$1.'/'.$2;
        !           914:             my $trole = Apache::lonnet::plaintext('cc');
        !           915:             my $twhere;
        !           916:             my $tbg='#77FF77';
        !           917:             my $tfont='#003300';
        !           918:             my %newhash=&Apache::lonnet::coursedescription($tcourseid);
        !           919:             if (%newhash) {
        !           920:                 $twhere=$newhash{'description'}.
        !           921:                         ' <font size="-2">'.
        !           922:                         &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont).
        !           923:                         '</font>';
        !           924:             } else {
        !           925:                 $twhere=&mt('Currently not available');
        !           926:                 $ENV{'course.'.$tcourseid.'.description'}=$twhere;
1.110     raeburn   927:             }
1.113   ! raeburn   928:             $twhere.="<br />".&mt('Domain').":".$1;
        !           929:             $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,&mt('Course'),$twhere,'','','',1,'');
1.104     raeburn   930:         }
                    931:     }
1.113   ! raeburn   932:     return $roletext;
1.104     raeburn   933: }
                    934: 
1.108     raeburn   935: sub allcourses_row {
1.109     raeburn   936:     my $dcdom = shift;
1.108     raeburn   937:     my $ccrole = Apache::lonnet::plaintext('cc');
                    938:     my $selectlink = &courselink($dcdom);
                    939:     my $output = '<tr bgcolor="#77FF77">'.
                    940:               '<td><input type="button" value="'.
1.109     raeburn   941:               &mt('Select').'" name="ccpick_'.$dcdom.'"'.
1.108     raeburn   942:               'onClick="verifyCoursePick(this)">'.
                    943:               '<input type="hidden" name="pick_'.$dcdom.'" value="1"></td>'.
                    944:               '<td><font color="#002200">'.
                    945:               $ccrole.'</font></td><td>'.&mt('Course').'</td>'.
                    946:               '<td><font color="#002200">'.&mt('All courses').':<b>&nbsp;'.
                    947:               $selectlink.'</b>'.
                    948:               '<br />'.&mt('Domain').':'.$dcdom.'</font>'.
                    949:               '<td colspan="4"><font color="#002200">'.
                    950:               &mt('Course Coordinator access to all courses in domain').
                    951:               ': <b>'.$dcdom.'</b></font></td></tr>'."\n";
                    952:     return $output;
                    953: }
                    954: 
1.104     raeburn   955: sub recent_filename {
                    956:     my $area=shift;
                    957:     return 'nohist_recent_'.&Apache::lonnet::escape($area);
                    958: }
                    959: 
1.106     raeburn   960: sub set_privileges {
                    961:     my ($dcdom,$pickedcourse) = @_;
                    962:     my $area = '/'.$dcdom.'/'.$pickedcourse;
                    963:     my $role = 'cc';
                    964:     my $spec = $role.'.'.$area;
                    965:     my $userroles = &Apache::lonnet::set_arearole($role,$area,'','',$dcdom,$ENV{'user.name'});
                    966:     my %ccrole = ();
                    967:     &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
1.107     raeburn   968:     my ($author,$adv)= &Apache::lonnet::set_userprivs(\$userroles,\%ccrole);
                    969:     my @newprivs = split/\n/,$userroles;
1.106     raeburn   970:     my %newccroles = ();
                    971:     foreach (@newprivs) {
                    972:         my ($key,$val) = split/=/,$_;
                    973:         $newccroles{$key} = $val;
                    974:     }
                    975:     &Apache::lonnet::appenv(%newccroles);
                    976:     &Apache::lonnet::log($ENV{'user.domain'},
                    977:                          $ENV{'user.name'},
                    978:                          $ENV{'user.home'},
                    979:                         "Role ".$role);
                    980:     &Apache::lonnet::appenv(
                    981:                           'request.role'        => $role,
                    982:                           'request.role.domain' => $dcdom,
                    983:                           'request.course.sec'  => '');
                    984:     my $tadv=0;
                    985:     if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
                    986:     &Apache::lonnet::appenv('request.role.adv'    => $tadv);
                    987: }
                    988: 
1.1       harris41  989: 1;
                    990: __END__
1.32      harris41  991: 
                    992: =head1 NAME
                    993: 
                    994: Apache::lonroles - User Roles Screen
                    995: 
                    996: =head1 SYNOPSIS
                    997: 
                    998: Invoked by /etc/httpd/conf/srm.conf:
                    999: 
                   1000:  <Location /adm/roles>
                   1001:  PerlAccessHandler       Apache::lonacc
                   1002:  SetHandler perl-script
                   1003:  PerlHandler Apache::lonroles
                   1004:  ErrorDocument     403 /adm/login
                   1005:  ErrorDocument	  500 /adm/errorhandler
                   1006:  </Location>
1.64      bowersj2 1007: 
                   1008: =head1 OVERVIEW
                   1009: 
                   1010: =head2 Choosing Roles
                   1011: 
                   1012: C<lonroles> is a handler that allows a user to switch roles in
                   1013: mid-session. LON-CAPA attempts to work with "No Role Specified", the
                   1014: default role that a user has before selecting a role, as widely as
                   1015: possible, but certain handlers for example need specification which
                   1016: course they should act on, etc. Both in this scenario, and when the
                   1017: handler determines via C<lonnet>'s C<&allowed> function that a certain
                   1018: action is not allowed, C<lonroles> is used as error handler. This
                   1019: allows the user to select another role which may have permission to do
                   1020: what they were trying to do. C<lonroles> can also be accessed via the
                   1021: B<CRS> button in the Remote Control. 
                   1022: 
                   1023: =begin latex
                   1024: 
                   1025: \begin{figure}
                   1026: \begin{center}
                   1027: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
                   1028:   \caption{\label{Sample_Roles_Screen}Sample Roles Screen} 
                   1029: \end{center}
                   1030: \end{figure}
                   1031: 
                   1032: =end latex
                   1033: 
                   1034: =head2 Role Initialization
                   1035: 
                   1036: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role.
1.32      harris41 1037: 
                   1038: =head1 INTRODUCTION
                   1039: 
                   1040: This module enables a user to select what role he wishes to
                   1041: operate under (instructor, student, teaching assistant, course
                   1042: coordinator, etc).  These roles are pre-established by the actions
                   1043: of upper-level users.
                   1044: 
                   1045: This is part of the LearningOnline Network with CAPA project
                   1046: described at http://www.lon-capa.org.
                   1047: 
                   1048: =head1 HANDLER SUBROUTINE
                   1049: 
                   1050: This routine is called by Apache and mod_perl.
                   1051: 
                   1052: =over 4
                   1053: 
                   1054: =item *
                   1055: 
                   1056: Roles Initialization (yes/no)
                   1057: 
                   1058: =item *
                   1059: 
                   1060: Get Error Message from Environment
                   1061: 
                   1062: =item *
                   1063: 
                   1064: Who is this?
                   1065: 
                   1066: =item *
                   1067: 
                   1068: Generate Page Output
                   1069: 
                   1070: =item *
                   1071: 
                   1072: Choice or no choice
                   1073: 
                   1074: =item *
                   1075: 
                   1076: Table
                   1077: 
                   1078: =item *
                   1079: 
                   1080: Privileges
                   1081: 
                   1082: =back
                   1083: 
                   1084: =cut

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